Table of Contents
Conference Papers in Energy
Volume 2013, Article ID 526320, 6 pages
Conference Paper

A Measure of Capacity Contribution of Static Mono-Si Photovoltaic Systems

1Electricity Authority of Cyprus, 11 Amphipolis Street, Strovolos, P.O. Box 4506, 1399 Nicosia, Cyprus
2American University of Sharjah, P.O. Box 26666, Sharjah, UAE

Received 24 December 2012; Accepted 4 February 2013

Academic Editors: Y. Al-Assaf, P. Demokritou, and C. Sourkounis

This Conference Paper is based on a presentation given by Constantinos Varnavas at “Power Options for the Eastern Mediterranean Region” held from 19 November 2012 to 21 November 2012 in Limassol, Cyprus.

Copyright © 2013 Constantinos Varnavas and Andreas Poullikkas. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Photovoltaic (PV) systems generate electricity in the daytime when system demand is generally moderate to high. For Mediterranean countries, there is also seasonal coincidence of high system demand and high PV load factors. The present study quantifies the above statements by calculating the load factor of the PV system when system demand is high (above 90–99% of the maximum demand of the month). The percentage of time the PV load factor is above 90% for these periods of maximum demand is evaluated. The PV load capacity contribution is defined in this study as the minimum PV load factor during these periods of high demand. Actual generation data from a static (without tracking) mono-Si PV system, recorded every half hour for the year 2010 are compared to system demand data. The seasonality analysis indicates that PV contribution to capacity is only significant during the months May–October. For the months November–April, when daily demand peak occurs during the evening, PVs do not contribute towards capacity. The evaluated capacity contribution of PV systems depends on the threshold of maximum demand considered (90%–99%). For the threshold of 95%, the capacity contribution for May–October ranges between 27%–41% of PV installed capacity.